Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/15685
Title: An Experimental Investigation of Taylor Couette flow between eccentric cylinders
Authors: LIM SHOA SIONG
Keywords: Taylor-Couette flow, eccentricity, flow instability, torque measurement, flow visualization, critical Reynolds number
Issue Date: 15-Mar-2007
Source: LIM SHOA SIONG (2007-03-15). An Experimental Investigation of Taylor Couette flow between eccentric cylinders. ScholarBank@NUS Repository.
Abstract: The influences of radius ratio and aspect ratio on eccentric Taylor Couette flow are investigated through torque measurements and flow visualizations. The results showed that eccentricity and radius ratio are stabilizing factors in Taylor Couette flow as critical Reynolds number (ReC) increases with their magnitudes. Both critical Reynolds number ratio (ReC / ReCO) and critical wave number are found to be independent of radius ratio and empirical equations are subsequently proposed. Non-dimensionalized torque (G) and friction (Cf) coefficients also exhibit significant variations between eccentricities as well as radius ratios. Conversely, aspect ratio has negligible effects on the characteristics of eccentric Taylor Couette flow. Flow images are described and analyzed to relate the evolutions of the flow structures to various flow characteristics. Attempts are also made to identify the locations of flow separation and maximum vortex activities from the flow images. Lastly, the end effects on eccentric Taylor Couette flow are briefly discussed.
URI: http://scholarbank.nus.edu.sg/handle/10635/15685
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